David Weintraub on How Old Is the Universe? Part 4

This video was taped at Vanderbilt University as part of the Osher Lifelong Learning Institute.

Earlier videos in this series:
Part 1: http://blog.press.princeton.edu/?p=9307
Part 2: http://blog.press.princeton.edu/?p=10029
Part 3: http://blog.press.princeton.edu/?p=10033

Dr. Weintraub is author of How Old Is the Universe? You can read an excerpt of this book here.